1. Czerwik, S: Contraction mappings in b-metric spaces. Acta Math. Inform. Univ. Ostrav. 1, 5-11 (1993)
2. Bakhtin, IA: The contraction mapping principle in almost metric space. In: Functional Analysis, vol. 30, pp. 26-37. Ul’yanovsk. Gos. Ped. Inst., Ul’yanovsk (1989)
3. Bourbaki, N: Topologie Générale. Hermann, Paris (1974)
4. Aydi, H, Bota, M-F, Karapınar, E, Moradi, S: A common fixed point for weak-phi-contractions on b-metric spaces. Fixed Point Theory 13, 337-346 (2012)
5. Bota, M-F, Chifu, C, Karapınar, E: Fixed point theorems for generalized ( α ∗ - ψ ) $(\alpha * \mbox{-}\psi)$ -Ćiric-type contractive multivalued operators in b-metric spaces. Abstr. Appl. Anal. 2014, Article ID 246806 (2014)